Bank transmission pattern of color conversion panel, display device including the same, and method of providing the same

Patent metadata

Field	Value
Publication number	US-2024357913-A1
Application number	US-202418442641-A
Country	US
Kind code	A1
Filing date	Feb 15, 2024
Priority date	Apr 19, 2023
Publication date	Oct 24, 2024
Grant date	—

Abstract

A color conversion panel includes a substrate including first and second light emitting regions, banks partitioning the first and second light emitting regions, each bank among the banks including a bank light transmission layer, a metal layer on the bank light transmission layer and a transparent layer on the metal layer, a color conversion layer in the first light emitting region, and a light transmission layer in the second light emitting region. The bank light transmission layer and the light transmission layer are respective portions of a same material layer on the substrate.

First claim

What is claimed is:

1 . A color conversion panel, comprising:
a substrate comprising a first light emitting region and a second light emitting region; a plurality of banks on the substrate and partitioning the first light emitting region and the second light emitting region, each bank among the plurality of banks comprising:
a bank light transmission layer;
a metal layer on the bank light transmission layer; and
a transparent layer on the metal layer;
a color conversion layer in the first light emitting region; and a light transmission layer in the second light emitting region, wherein the bank light transmission layer and the light transmission layer are respective portions of a same material layer on the substrate.

2 . The color conversion panel of claim 1 , wherein within the each bank, the bank light transmission layer is closer to the substrate than the transparent layer.

3 . The color conversion panel of claim 1 , wherein
the plurality of banks includes a first bank and a second bank on opposing sides of the color conversion layer, the second bank being closer to the light transmission layer than the first bank, the light transmission layer extends out of the second light emitting region and toward the color conversion layer to define an extended portion of the light transmission layer, and the extended portion of the light transmission layer includes the bank light transmission layer.

4 . The color conversion panel of claim 1 , wherein the metal layer of the each bank does not overlap the first light emitting region or the second light emitting region along a thickness direction of the color conversion panel.

5 . The color conversion panel of claim 1 , wherein a thickness of the metal layer is about 100 angstroms to about 1000 angstroms.

6 . The color conversion panel of claim 1 , wherein a thickness of the transparent layer is about 1 micrometer to about 5 micrometers.

7 . The color conversion panel of claim 1 , wherein
the plurality of banks includes a first bank and a second bank on opposing sides of the color conversion layer, the second bank being closer to the light transmission layer than the first bank, and within the first bank:
the metal layer covers an outer surface of the bank light transmission layer, and
the transparent layer covers an outer surface of the metal layer.

8 . The color conversion panel of claim 1 , wherein
the plurality of banks includes a first bank and a second bank on opposing sides of the color conversion layer, the second bank being closer to the light transmission layer than the first bank, and within the second bank:
the metal layer covers an upper surface and a side surface of the bank light transmission layer which faces the color conversion layer, and
the transparent layer covers an outer surface of the metal layer.

9 . The color conversion panel of claim 8 , wherein within the second bank, ends of the metal layer and ends of the transparent layer are aligned with each other.

10 . The color conversion panel of claim 1 , wherein
the first light emitting region emits red light or green light, and the second light emitting region emits blue light.

11 . A method of providing a display device, the method comprising:
providing on a substrate, a plurality of banks partitioning a first light emitting region and a second light emitting region of the display device; and providing a plurality of light transmission patterns spaced apart from each other along the substrate, the light transmission patterns including a plurality of bank light transmission layers respectively between the first light emitting region and the second light emitting region, and a light transmission layer in the second light emitting region; wherein the providing of the plurality of banks comprises: providing a metal material layer on the bank light transmission layers and the light transmission layer; providing a transparent layer on the metal material layer to respectively expose a portion of the metal material layer which corresponds to the first light emitting region and the second light emitting region to outside the transparent layer; and etching the portion of the metal material layer which is exposed, using the transparent layer as a mask, to form the plurality of banks each including a bank light transmission layer among the plurality of bank light transmission layers, a metal layer, and the transparent layer.

12 . The method of claim 11 , further comprising providing a color conversion layer in the first light emitting region.

13 . The method of claim 11 , wherein
the plurality of banks includes a first bank and a second bank on opposing sides of the first light emitting region, the second bank being closer to the light transmission layer than the first bank, the light transmission layer extends out of the second light emitting region and toward the first light emitting region to define an extended portion of the light transmission layer, and the extended portion of the light transmission layer includes the bank light transmission layer of the second bank, and within the second bank:
the metal layer covers an upper surface and a side surface of the bank light transmission layer which is closest to the first light emitting region, and
the transparent layer covers an outer surface of the metal layer.

14 . The method of claim 11 , wherein
the plurality of banks includes a first bank and a second bank on opposing sides of the first light emitting region, the second bank being closer to the light transmission layer than the first bank, and within the first bank:
the metal layer covers an outer surface of the bank light transmission layer, and
the transparent layer covers an outer surface of the metal layer.

15 . The method of claim 11 , further comprising prior to the providing of the plurality of light transmission patterns spaced apart from each other along the substrate, providing a color filter on the substrate.

16 . The method of claim 11 , further comprising prior to the providing of the plurality of light transmission patterns spaced apart from each other along the substrate, providing on the substrate, a transistor and a light emitting device which is connected to the transistor.

17 . A display device, comprising:
a plurality of light emitting regions comprising a first light emitting region and a second light emitting region; a display panel comprising:
a first substrate;
a plurality of partition walls respectively between the plurality of light emitting regions, along the first substrate; and
an emission layer between the partition walls; and
a color conversion panel facing the display panel, the color conversion panel comprising:
a second substrate;
a plurality of banks on the second substrate and respectively corresponding to the plurality of partition walls, each bank among the plurality of banks comprising:
a bank light transmission layer;
a metal layer on the bank light transmission layer; and
a transparent layer on the metal layer;

a color conversion layer in the first light emitting region; and
a light transmission layer in the second light emitting region,
wherein the bank light transmission layer and the light transmission layer are respective portions of a same material layer on the second substrate.

18 . The display device of claim 17 , wherein within the each bank among the plurality of banks:
the metal layer covers an outer surface of the transparent layer, the metal layer does not overlap the firs

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Young Min
• Kim Hyun-Seok
• Kim Hyeong Gyu
• Kim Hyo Joon
• Noh Hyun Woo
• Park Keun Young
• Baek Moon Jung
• Lee Hye Seung

Classifications

• H10H20/882

  Scattering means (H10H20/82 takes precedence) · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H10H20/83

  Electrodes · CPC title

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• H10H20/8514 Primary

  characterised by their shape, e.g. plate or foil · CPC title